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Finaxion Research · ADX: trade only in strong trends · single stocks · Recomputed 2026-09-10

Does ADX: trade only in strong trends work on NTAP?

ADX: trade only in strong trends does not beat buy-and-hold on NTAP: -5.4 points a year over 31 years.

Total return
×47
Buy and hold
×198
CAGR
13.3%
Sharpe
0.41
Max drawdown
-61.2%
Trades
948
Out of sample
overfit
Years
31
1×10×100×19961999200220052008201120142017202020232026
StrategyNTAP

Findings

  1. ADX: trade only in strong trends does not beat buy-and-hold on NTAP: -5.4 points a year over 31 years.
  2. Against the S&P 500 over the same window: +2.8 points a year.
  3. Total return ×47 versus ×198 for buy-and-hold, with 948 trades.
  4. The result does not hold out of sample: it is overfit.
  5. Maximum drawdown -61.2%.
  6. It beats in neither half of the history (split at 2011).
  7. It ranks #14 of 235 markets for this strategy by annual excess over the S&P 500.

Findings derived from the full panel. Each carries its number and its denominator; the computations are reproducible with artifact 5bea546c394a.

Exactly what was tested

Long while +DI(14) is above −DI(14); flat when −DI overtakes +DI. Next-close execution.

How to read it

The verdict compares the strategy with buying and holding NTAP over the same window, with round-trip costs per asset class. “Out of sample” is walk-forward: the rule is fit on one stretch and judged on the next. A result that beats in the full sample but not out of it is overfit. Full methodology in the protocol. How we test.

Open this backtest with its trades   Trades (CSV)

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How to cite

Finaxion Research (2026). Does ADX: trade only in strong trends work on NTAP?. Daily backtest 1962-01-01–2026-08-31, artifact 5bea546c394a. https://finaxion.app/en/research/adx-trend-filter/ntap

Not a recommendation. Past performance does not guarantee future results.